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I am trying to be able to send SMS messages with links that contain OpenGraph preview images which will load in the iOS "Messages" application and will display the thumbnail without the user having to press [Tap To Load Preview] first... How can this be achieved?
For this, I am sending a text SMS message to an iPhone X which is running iOS 10 and opened with the Messages app.
The text message body contains a URL that points to a resource (a HTML web page) whose body contains OpenGraph metadata with an og:image tag. Eg:
<meta property="og:image" content="https://www.apple.com/v/iphone/home/t/images/home/og.png?201610171354" />
For presentation purposes, we are trying to make it so that the image will load first and immediately, without the user having to tap the button in order to to see it...
Expected Behavior:
Actual Behavior:
As a side note, on the Android clients we have tested, where OpenGraph is supported the image will display instantly without the user being prompted to do anything. The same is true for any other OpenGraph supported application tested, including Facebook.
For reference, here are some of the methods I've tested to try to get this working for us (as well as combinations therein):
50x50, 60x50, etc and up).<head> of the page.og:image tags.Content-Type header alone.Tried sending from various phone numbers US and Australian, also tried changing the "From" field for the SMS message itself to strings like "VERIZON", "Verizon", "Telstra", "APPLE", "Apple", "Facebook", "Uber", "China".
Tried sending the messages from handheld phone as well as from the Twilio Messaging API service.
None of the above work for an iPhone X.
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Open the Settings app. Go to Notifications > Messages > Show Previews. Choose Never or Off to disable message previews. If you want to see message previews only when using your phone (when the passcode is entered), choose When Unlocked.
Go to Settings > Notifications > Messages > on the next screen, tap on Show Previews option, located under 'Options' section. On the next screen, select the Never option to totally disable iMessage and Text Message Previews on iPhone.
There is no way to do this with SMS. If you send it as an iMessage it will automatically display the preview.
On iPhones the preview is generated on the device rather than server-side. When a user taps preview their device sends 4 GET requests to the server. If the preview was generated automatically there would be a security vulnerability. You could send a text to any iPhone user and get their IP Address.
With iMessages the preview is generated automatically but there is no security vulnerability. The device sending the link sends 4 GET requests to the server, generates the preview and then transmits the preview to the recipient via iMessages. As a result, the receiving device has no need to send a request to the server to generate a preview. And their IP Address is not known to the owner of a webserver.
On Google's Android Messaging app the preview is generated server side. There is one GET request sent to the web server. But it originates from the Android Messages server. So again the owner of the webserver does not receive the recipient's IP Address from their receipt of the text.
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